Put approximately 20 % of the batter into a new bowl and then a half of the rest (which would be 40 % of the total, as we know) into another bowl.

Add: cocoa and blueberries to the bowl with the 20% portion, beet root juice and blueberries to the second bowl (with 40 %) and processed young spinach leaves to the third bowl (also 40 %). You need to shred the spinach leaves together with some cake batter for a better result. I don’t think I should tell you about the quantities, the only important thing seems to be not to overdo the cocoa or juice.

Add some semolina to beet root and spinach batter; they shouldn’t be too liquid (something like 2-3 spoons, no need to exaggerate, though).